Lookup Tool
Wuzzy

Adds a tool which shows help entries about almost anything which it punches.

Infinity Gauntlet
Gcbarden

Adds The Infinity Gauntlet

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.

BiomeDB
EmptyStar

Searchable biome database for robust biome selection

Nodrown
Minisleep

Disables drowning, so you can swim and live underwater forever.

Minetest test framework
BuckarooBanzai

Provides an api to register test functions for integration-tests.

Unifiedbricks
wowiamdiamonds

This mod allows the user to re-color default bricks using Unified Dyes, and provides some pattern variations as well.

Skygrid
ROllerozxa

Custom skygrid mapgen.

Cones: Traffic and Training Cones
ClassicAdam

Cones. Various use traffic cones and training cones. 3 sizes, 10 colors, 30 cones in total.

Circular Saw recipes for Unified Inventory
1F616EMO

List circular saw usages as recipes

Name Generator
FaceDeer

A lua library for generating random names based off of rulesets and syllable lists.

Nodecore Paint
Kimapr

Paint anything on node surfaces

Upgrade Packs
Krock

Provides craftable packs to players to increase their health and breath

Coolbar
luarocks

Automatic items management between inventory and hotbar.

Stairs Recycle
DumbDave961

Turn stairs into slabs, different stairs, or back into blocks. Smelt cobble stairs into stone stairs. Highly recommended for Oneblock survival.

Tomb Stones
Nathan.S

Adds many shapes and styles of tombstones.

SkillsFramework
domtron vox

SkillsFramework provides an API for creating and managing skills.

Flow Inspector
Luke

An "inspect element" helper for flow GUIs

Placeable Buckets for Catching Rainwater
Noodlemire

Allows empty buckets to be placed as nodes in order to collect rainwater.

Axis Tools
mt-mods

All the functionality of tinkers construct, but all in your inventory.

Medieval (Fork)
DragonWrangler

an addon to darkage

Manage entities
SFENCE

Prevents server lag by limiting configured entity count per area. Automatically removes excess entities based on configuration.

Fbt WiTT
Forburnt

WAILA-like mod (a rewrite of WiTT by MightyAlex200)

Nebula Anti-Cheat
JoinNebula

Cheat detection and prevention

Build Easy Box
epCode

A handy tool allowing the creation of large structures with minimal effort (in survival!).

Music Player
Jose_ManuelS18

Adds a music player and discs

Zero-Effort Custom Minerals
Piezo_

A tool for registering entire materials, complete with ore generation, tool-sets and automatically generated sprites with almost no effort required

TPH's Wielditem
TPH

Wielded Item Events with Prepackaged Wield3d + Wielded Light Functionality!

Copper Armors and Tools
michi16bit

Add Armors and Tools of Copper (and variant)

Flow Extras
lazerbeak12345

An experimental collection of extra widget APIs for flow

Action PVP for CTF
Suzakuu

A 16-32px PVP pack for CTF(Rubenwardy)

blackhole containment box
Soundwavez

cool swirvy gravitational blackhole boxes, that can be used to "ahnialate" enemy bases, or for "deforestation" aah i love abms! (extra dramatic!))

eXtended Ban 2
kaeza

Tempbanning and better banning by keeping track of usernames and IP addresses

Raining Death
aether123

TNT Rains from the Sky

Climbable Trapdoors
ZenonSeth

Makes the wood and steel trapdoors climbable

Hedges
Shara

Adds connected hedges that that can be crafted from leaves.

Better Randomizer
ThePython10110

Randomizes node drops, mob drops, and crafting recipes

Sparking Wand Mod
Olaf

Craft a wand with which you can cast a lightning spell. Great for discovering caves.

Hard Trees
octacian

Require tools to break trees and introduce beginner-tier rock tools.

The Confluence
MisterE

A luamap example - a small (500x100x500) Island in the middle of the ocean with 4 rivers that run from the center to the sea.